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U0078 Diagnostic Trouble Code Discussion for January 2024

lo speed can buss off


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Trouble Ticket Help Requests for DTC U0078
Help Request Posted
2017 Buick Verano Leather 2.4L No Start VIN: 1G4PS5SK1H
U0078: lo speed can buss off. Customer drove in because vehicle had multiple warning lights on in instr. cluster. Shut car off, no restart. Tested battery and all battery fuses (using headlight bulb) all O K. Reconnected battery entered vehicle, dome light works, multiple red and amber...
January 31, 2024